Three-dimensional label-free imaging and quantification of lipid droplets in live hepatocytes

Lipid droplets (LDs) are subcellular organelles with important roles in lipid storage and metabolism and involved in various diseases including cancer, obesity, and diabetes. Conventional methods, however, have limited ability to provide quantitative information on individual LDs and have limited capability for three-dimensional (3-D) imaging of LDs in live cells especially for fast acquisition of 3-D dynamics. Here, we present an optical method based on 3-D quantitative phase imaging to measure the 3-D structural distribution and biochemical parameters (concentration and dry mass) of individual LDs in live cells without using exogenous labelling agents. The biochemical change of LDs under oleic acid treatment was quantitatively investigated, and 4-D tracking of the fast dynamics of LDs revealed the intracellular transport of LDs in live cells.
Publisher
NATURE PUBLISHING GROUP
Issue Date
2016-11
Language
English
Citation

SCIENTIFIC REPORTS, v.6

ISSN
2045-2322
DOI
10.1038/srep36815
URI
http://hdl.handle.net/10203/214792
Appears in Collection
BiS-Journal Papers(저널논문)PH-Journal Papers(저널논문)
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